Granted Patent
Utility
US 5,717,094 · App. 07/731,162
Process and intermediates for preparing compounds having a disubstituted acetylene moiety and retinoic acid-like biological activity
Inventor:
Roshantha A. Chandraratna
Patented Case
View Patent ↗
Granted: Feb 10, 1998
Filed: Jul 15, 1991
Inventor
Roshantha A. Chandraratna
Assignee (at issue)
Allergan, Inc.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.